Re: [Jython-users] Trouble using Stanford parser with Jython

[Jinseung Eu <jin...@li...>]

Thanks, Coleman.

You really helped me and now it works. The problem was that I didn't 
provide the full path for the .jar file. When I initially added that 
file to sys.path successfully, I just assumed that it was being accessed 
all right, but this was wrong. I didn't know that you can even add a 
non-existent file to the path.

Anyway, may I ask another question? Why is it that I need a .jar file 
for the Stanford parser while I can access other built-in Java classes 
without it, just by specifying the directory path and class name (which 
is in .java format)?

I would like to add points to your reputation on this site, but I din't 
know how to do that. I would appreciate if you can tell me how.

Thank you very much.

Don Coleman ? ?:
> You need standford-parser.jar in the classpath, not stanford-parser-2008/src.
>
> Jython won't compile Java source.
>
> The stanford-parser-2008 folder does not need to be inside the
> jython-2.2.1 directory
>
> Here's the steps I followed
>
> Download
> $ curl -O http://www-nlp.stanford.edu/downloads/stanford-parser-2008-10-26.tgz
>
> Untar
> $ tar xzf stanford-parser-2008-10-26.tgz
>
> Change to the directory with the parser
> $ cd stanford-parser-2008-10-26
>
> Check the make sure the parser works
> $ ./lexparser.csh testsent.txt
>
> Try in jython
> $ jython
> Jython 2.2.1 on java1.6.0_07
> Type "copyright", "credits" or "license" for more information.
>   
>>>> import sys
>>>> sys.path.append('stanford-parser.jar')
>>>> from edu.stanford.nlp.parser import Parser
>>>>         
>
> This assumes that stanford-parser.jar is in the same directory where
> you start Jython.  If inot, enter the full path to
> standford-parser.jar
>   
>>>> sys.path.append('/tmp/stanford-parser-2008-10-26/stanford-parser.jar')
>>>>         
>
> There is a build.xml script in stanford-parser-2008-10-26.  If you
> have apache ant installed, you can build the code by typing "ant".
> Then you can add the directory with the compiled classes instead of
> standford-parser.jar
>   
>>>> sys.path.append('/tmp/stanford-parser-2008-10-26/classes)
>>>>         
>
>
> On Sun, Mar 15, 2009 at 7:56 AM, Jinseung Eu
> <jin...@li...> wrote:
>   
>> Hello!
>>
>> I am having a trouble using a program called Stanford Parser 1.6.1 (To unzip
>> it, you may have to unzip it twice):
>> (http://www-nlp.stanford.edu/downloads/lex-parser.shtml#Download).
>>
>> I have posted several messages but have not received a full solution. So I
>> am posting it again with all updates.
>>
>> I renamed the unzipped folder as "stanford-parser-2008" and put it inside
>> the jython 2.2.1 folder and added the path as follows:
>>
>>     
>>>> import sys
>>>> sys.path.append("stanford-parser-2008\\src")
>>>>
>>>>         
>> Then I accessed the following packages within src, and this worked:
>>     
>>>> import edu.stanford.nlp.parser
>>>>
>>>>         
>> But when I try to access a class within it I get an error:
>>
>>     
>>>> import edu.stanford.nlp.parser.Parser
>>>>         
>> Traceback ...
>> File "<console>"....
>> ImportError: no module named Parser
>>
>>     
>>>> from edu.stanford.nlp.parser import Parser
>>>>         
>> Traceback ...
>> File "<console>"....
>> ImportError: cannot import name Parser
>>
>> This problem was encountered by someone else two years ago
>> (http://www.nabble.com/Importing-non-builtin-java-modules-to8957425.html#a8999193)
>> Here Charlie resolves the issue by adding "stanford-parser.jar" to sys.path.
>> --> But this doesn't work for me. I don't know why. Do I need to put the
>> unzipped folder somewhere else?
>>
>> Below, Jeff suggests I need to compile the "Parser.java" file to
>> "Parser.class" file.
>> --> I tried the compilation but failed (Perhaps I put the file in the wrong
>> place for compilation, or the file is not meant to be compiled).
>> --> Also I am not entirely convinced that a .class file is necessary here.
>> Jython can import .java files like System.java (in java.lang) and
>> Random.java (in java.util). Then, why do I have to have a .class file for
>> the Stanford parser? /
>>
>> Can someone please help me get solve this puzzle?
>> Thanks a lot.
>>
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